10kv Three-Phase Oil Immersed Transformers Factory Price 440V Output & 69kv Input 50Hz & 60Hz

10kv Three-Phase Oil Immersed Transformers Factory Price 440V Output & 69kv Input 50Hz & 60Hz Frequency

1. Product Description

The 69kv input and 10kv/440v output three-phase oil immersed transformer is a practical industrial-grade power distribution device offered directly at factory price, tailored for global medium and high voltage power conversion projects. This heavy-duty three-phase oil immersed transformer supports dual universal operating frequencies of 50Hz and 60Hz, perfectly adapting to different grid standards in Asia, Europe, America and other regions. Designed with a high 69kv primary input voltage, it achieves accurate step-down conversion to stable 10kv medium voltage and standard 440v three-phase low voltage, solving the voltage matching challenges of high-voltage grid access and industrial terminal power supply in complex power systems.

Manufactured in full compliance with IEC 60076 international power transformer standards, this low-cost factory-direct oil immersed power transformer adopts high-quality grain-oriented silicon steel core and pure copper winding materials to effectively reduce no-load loss and load loss during long-term continuous operation. It adopts mature ONAN oil natural air natural cooling technology and fully sealed corrugated oil tank structure, with high-purity insulating oil providing reliable internal insulation and circulating heat dissipation. Different from customized high-priced transformers, this mass-produced three-phase distribution transformer maintains stable industrial-grade performance while offering competitive factory price, making it a cost-effective choice for large-scale power grid renovation, industrial supporting power distribution and field engineering power supply projects.

2. Core Uses

This 69kv to 10kv/440v three-phase oil immersed transformer focuses on high-to-medium and medium-to-low graded voltage conversion for large-scale medium and high voltage power grids. Its core function is to step down 69kv ultra-high grid voltage to 10kv medium transmission voltage for regional secondary power distribution and long-distance grid power transmission, further converting partial power into 440v standard industrial three-phase voltage to support all kinds of industrial mechanical equipment and electrical devices. It effectively solves the problems of high line loss and unstable voltage in long-distance high-voltage power transmission, realizing hierarchical and efficient power distribution.

As a universal 50Hz/60Hz dual-frequency power transformation device, this factory-price oil immersed transformer also undertakes key grid operation optimization tasks in daily use. It can balance three-phase load distribution, suppress grid voltage surge and voltage drop caused by peak load fluctuation, and stabilize the output quality of 10kv medium-voltage grid and 440v low-voltage power loop. The low-loss operating structure reduces long-term power consumption loss of the power system, improves overall power supply efficiency, and provides reliable overload and short-circuit protection for subsequent power distribution equipment and industrial terminal devices, ensuring safe and stable operation of medium and high voltage power distribution systems.

3. Application Scenarios

3.1 Large Industrial Base Power Distribution

This 69kv input three-phase oil immersed transformer is widely used in large mining bases, metallurgical industrial parks, chemical manufacturing zones and heavy industry clusters. These industrial scenarios mostly adopt 69kv high-voltage grid access to meet high-power load demand. The transformer converts high voltage to 10kv for internal plant substation secondary power distribution, and outputs 440v stable three-phase power for heavy-duty motors, automated production lines and large mechanical processing equipment. The 50Hz and 60Hz dual-frequency adaptability enables it to adapt to imported industrial equipment and overseas production line power standards, fully meeting continuous high-load industrial power supply needs.

3.2 Regional Hub Substation Construction

It serves as core power transformation equipment for urban hub substations, regional power distribution centers and suburban high-voltage grid upgrading projects. Many regional high-capacity power grids adopt 69kv main grid power transmission, which needs to be converted into 10kv medium voltage for regional shunting power supply, and 440v low voltage for industrial and commercial supporting power consumption. With stable performance and favorable factory price, this oil immersed distribution transformer is very suitable for large-scale batch installation in grid construction projects, effectively reducing the overall engineering procurement cost.

3.3 Overseas Power Grid & Engineering Projects

Thanks to its 50Hz and 60Hz dual-frequency universal design and 69kv/10kv/440v multi-voltage matching capability, this factory-direct three-phase oil immersed transformer is widely exported to overseas power engineering projects. It adapts to 60Hz high-voltage grid standards in North America and Southeast Asia, as well as 50Hz conventional grid systems in Europe and Africa, and can be flexibly applied to overseas industrial park construction, rural grid reconstruction and municipal power supply projects, with strong global versatility.

3.4 New Energy Power Station Grid Connection

In large-scale wind power bases, centralized photovoltaic power stations and energy storage power station projects, this high-efficiency oil immersed transformer acts as a key grid-connected conversion device. It converts the high-voltage electric energy generated by new energy units into 10kv medium voltage for grid-connected transmission to 69kv main grid, while providing 440v stable power for power station auxiliary equipment, monitoring systems and maintenance facilities. Its strong anti-interference ability effectively optimizes new energy grid-connected power quality and ensures stable operation of new energy power systems.

4. Product Features

4.1 69kv High Input & Dual-Grade Stable Output

Different from conventional medium and low voltage transformers, this three-phase oil immersed transformer adopts professional 69kv high-voltage input design, matching large-scale high-capacity power grid transmission standards. It supports simultaneous stable output of 10kv medium voltage and 440v industrial standard voltage, realizing two-stage voltage step-down in one single device. The voltage conversion accuracy is high with tiny output fluctuation, which can perfectly meet the dual demands of regional power grid transmission and industrial terminal equipment power supply, avoiding repeated equipment investment caused by segmented voltage transformation.

4.2 50/60Hz Dual-Frequency Global Compatibility

Optimized for global power frequency standards, this factory-price oil immersed power transformer can operate stably in both 50Hz and 60Hz AC power systems without manual parameter adjustment or structural modification. The internal core magnetic circuit and winding parameters are precisely calibrated for dual-frequency working conditions, with no extra heat generation or efficiency attenuation during frequency switching. It can seamlessly adapt to domestic conventional power grids and overseas industrial power systems, greatly expanding the application scope of power transformation equipment.

4.3 Factory Direct Sale & High Cost Performance

As a mass-produced standard industrial transformer, the product is sold directly by the transformer factory without intermediate dealers, with transparent and competitive pricing. While maintaining industrial-grade low-loss performance, fully sealed safety structure and dual-frequency universal adaptability, it effectively reduces the procurement cost of power engineering projects. It is the preferred cost-effective equipment for large-scale grid renovation, industrial supporting facilities and overseas engineering batch procurement, with obvious price advantage and reliable quality guarantee.

4.4 Low-Loss Energy-Saving & High Operational Stability

Adopting high-permeability low-loss silicon steel core and high-conductivity pure copper winding, the transformer optimizes internal magnetic circuit and winding layout, effectively reducing no-load loss, load loss and magnetic flux leakage. Compared with traditional old-fashioned high-voltage transformers, the overall power transmission efficiency is significantly improved. It can operate stably for a long time under full-load and variable-load conditions, resist instantaneous short-circuit impact and peak load surge, and maintain stable 10kv and 440v voltage output, with low failure rate and strong operational reliability.

4.5 Fully Sealed Oil Immersed Structure & Low Maintenance

The whole machine adopts an integrated fully sealed corrugated oil tank and vacuum oil injection process, which completely isolates internal insulating oil from external air, dust and moisture. It effectively prevents oil oxidation, emulsification and insulation aging, realizing long-term maintenance-free operation. The professional ONAN natural cooling system has uniform and efficient heat dissipation, which can quickly export operating heat generated by high-load operation. The outer shell undergoes anti-corrosion and weather-resistant treatment, adapting to outdoor open-air substations and harsh industrial environments, with long service life and low later maintenance cost.

5. Frequently Asked Questions (FAQ)

5.1 What project scenarios are suitable for 69kv input 10kv/440v oil immersed transformer?

This dual-frequency three-phase oil immersed transformer is mainly applicable for large-scale high-voltage power grid projects and heavy industrial power supply scenarios. The 69kv high input is tailored for regional main grid power transmission, large industrial base high-voltage access and new energy centralized grid connection. The 10kv output is used for internal regional secondary power distribution, while the 440v output perfectly matches global industrial three-phase equipment voltage standards. It is also very suitable for overseas 60Hz grid engineering and domestic 50Hz industrial supporting projects, especially for engineering procurement that requires both stable performance and factory price cost advantage.

5.2 Does dual 50Hz and 60Hz frequency operation affect transformer service life?

No, it will not affect the service life and operational performance. This factory-direct three-phase oil immersed transformer is professionally designed and tested for dual-frequency operation. All internal electrical parameters, core structure and heat dissipation system are optimized to adapt to 50Hz and 60Hz working conditions. Whether switching frequency or operating continuously under single frequency, there will be no abnormal heat generation, magnetic saturation or performance attenuation. It can maintain long-term stable operation in different frequency grid systems, with the same service life and safety performance as single-frequency dedicated transformers.

5.3 What are the advantages of buying this transformer at factory price compared with middleman channels?

Purchasing directly from the factory can effectively avoid intermediate markup costs, with more transparent pricing and higher overall cost performance. All our 69kv input 10kv/440v three-phase oil immersed transformers are standardized mass-produced, with unified factory testing and quality inspection, ensuring consistent product quality. In addition, factory direct sales support batch delivery and customized parameter fine-tuning, and is equipped with complete after-sales technical support and installation guidance. For large power grid projects and industrial supporting projects, it can greatly reduce procurement costs and shorten the project construction cycle.